Ink eraser



l y 1,634,120 June 28 1927' G'. scHRADE INK ERASER Filed Jan. 5. 1926 NVENTOR Wmv ATTORNEY Patented June 28, 1927.V

GEORGE sCHRAnE, 0F BR'IDGEPORT, CONNECTICUT.

INK nitasniz.

Application filed.- January This invention relates to ink erasers and more particularly to an eraser employing a removable and reversible erasing blade, having increased cutting surfaces and adapted to provide new-edged portions thereof in position Jfor use, and further in employing a Y detachable clamping` member for securing the said erasing blades in yposition on the holder or head. j j .Y i

The invention is further designed to include in addition to the'seveial erasing edge portions a cutting edge which may be employed for cutting pencils, papers andthe like, or if desired the blade may be shaped like a scalpel blade and usedv by surgeons.

rlhe object of the invention is to provide a high class ink eraser of attractive design Vand constructionV having operatable clamping means whereby a double-ended elongated form of cutting blade may be removably attached, the opposite end portions of said cutting blade being reversible in the holder and each containing two cutting edges adapted to be projected from the forward end of the eraser in posit-ion or'use. y

It is a further object of the invention to form these blades inexpensively of very light stock and to make t-hem both reversible end for end upon the eraser head or holder and likewise removable and interchangeable with similar new blades whereby the old blades may be discarded as the same become dull and replaced with new blades thus adapting the blades for sale in packages containing specified numbers, for use in the holders 'in somewhat the same manner as is done with some forms of safety razor blades.

With these and other objects in View the invention resides and' consists in the construction and novel combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claim hereto appended, it being understood that various changes in the orm,proportion, size and minor details of construction within the scope ofthe claim may be resorted to without departure from the `spirit or sacrificingA any of the advantages of the invent-ion.v

Similar characters of reference denote like or corresponding parts throughout the sev-V eral figures oi the accompanying drawings forming a part of this specification, and upon which,

Fig. 1 is a sidey elevation'of an eraser embodying my invention;

5, 1926. serial No. 79,347.

Fig. 2y is a top edge view of the same;` l Fig. lSis a side view partiallybroken away vot theV main body port-ion or head member vof the eraser;

Fig. 4 is a perspective view of my imshown in Figs.1 and 2;

lFig.4 5 is' a similar perspective view of the kspring clamping member employed for sef curing the eraser blades inyposition upon the head; ..5

lblades adapted to be secured to the headin the manners shown in Figs. l, 2- and S, and Fig. y8 shows a side elevation of afmoditied form ot my invention, the samel including a handle and head formed I,integral ot one piece of metal and a clamping member adapted to be vadjusted by rotary movement for securing' a blade to the head instead of by a slidingv movement asvrequired Aby the form ot clamping member shown inl Figs. 1, 2k md5.' .-V The orml of erasersliown.in'Figs.'1 and 2 includes a metal head portion'lO' having a reduced shank 11 to which a terruled handle 12 is secured. The head portion is relatively long and wide enough to accommodate. the desired width of blade and is also heavy or thick enough to support the blade in posi tion for required operations; The head is provided with a centrally positioned stud 13 and two smaller laligned pins 14-14 which like the said stud is rigidly secured to the head. y

The several blades 15, 16 and 17 while diering somewhat so far as their general design is concerned are each provided with a relatively large central liole'18 and two smalleraligned pin holes 19-19, the former to receive the headed stud 13 and the latter to receive the iXed aligned pins lll-'14Cy so as to support the blade in longitudinal align-v ment with the head and handle, with the forward edge portion of the blade projecting slightly beyond the end of the head so as to present an lunobstructed cutting edge.

These blades are secured in position on the pins and against the side ofthe head means of a clamping member 20, one form of which is shown in Figs. 1, 2 and 5, adapted to slide longitudinally upon the face of vthe blade andV guided bythe said pins 13 and 14, while the other clamping member 20a is adaptedto be rotated on the stud 13a shown in Fig.v 8.

proved foi-m of four edge eraser blade as Figs. (Sand 7 f show modified yfornisfot The clamping member' 2O is of an elongated form slightly bowed to form a spring tension against the blade when pressed down and into position. Thismember is provided with a Central elongated slot- 21 having an enlarged end port-ion to receive the head of the stud 13 and whereby when the' clamp is pressed down and shoved forward the shank of the stud Will enter the reduced portion of the slot` and the underside of the `head Will engagey the out-er face of the clamping' member in a Way to hold the same in its clamped position. 4

The clamping member is further provided with two aligned elongated slots 22 to aecommodate the pins 14 and to retain the clamping member in alignment with the head *andA blader rlhis clamping` member is further provided upon its yinner end with a linger lug 23 tobetter facilitate its sliding movement when inl frictional engagement with the underside of the head of the stud 'it being obvious that the spring tension of the clamping member is sufficient to hold it and the blade in their clamped position.

Y The head ofthe fixed stud 1321, shown in Fig. 8 is of an elongated' shape and is adapted to enter the elongated opening 21l of the rotatable vclamping member 20@ when said clamping member is disposed erossivise of the head as indicated by dotted line-s in Fig.. 8. The slots 22iL are circular in form being cut in from the opposite edges of the Clamping member so as to permit the said clamping member to be turned upon the axis of the stud 13 and to be guided by the pins 14;? secured to the side of the head. This clamping member is also formed of bowed l spring metal and is rotated upon the face of the blade when compressed and held beneath the head of the stud in a manner to `clamp the blade to the head in alignment With the head and elamping'member. 'This clamping member may also be provided With a finger lug 23 to facilitate its movement in lockingv and unlocking the blades.

I claim:

An eraser ing a headed stud and guide pin upon one side thereof, a. removable eraser blade adapted to fit against the side of t-he head lan-'d'having holes to receive the headed stud andthe pin, an attachable relatively thin spring clamping member normally bent longitudinal and also provided with openings to re- GEORGE SCHRADE.

comprising ahead member hav- 

